A tool for remapping bad sectors in CURRENT?

Miroslav Lachman 000.fbsd at quip.cz
Wed Mar 17 11:35:40 UTC 2010


Dag-Erling Smørgrav wrote:
> Miroslav Lachman<000.fbsd at quip.cz>  writes:

>> The LBA of bad sector is *79725167* [...]  s1 starts 63 sectors from
>> the beginning of the drive and /var/db has offset 39845888. So am I
>> right that I need to find block number *39879105* by findblk command?
>
> Uh, 79725167 - 63 = 79725104 and 79725104 - 39845888 = 39879216.  How
> did you arrive at 39879105?

I am sorry, it was my confusion.
My calculation was for *LBA=79725056* reported in messages:

ad4: FAILURE - READ_DMA status=51<READY,DSC,ERROR> 
error=40<UNCORRECTABLE> LBA=79725056

79725056 - 63 - 39845888 = *39879105*

Your calculation is for LBA reported by SMART log

   40 51 00 6f 82 c0 44  Error: UNC at LBA = 0x04c0826f = *79725167*

That's why I get different result ;) I must pay more attention to the 
numbers next time!

It is interesting that there are two different LBAs for "same" error 
(appeared at the same time)

Miroslav Lachman


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